Adjustable handlebar for bicycles, motor bicycles, and the like vehicles



C. E. BROBERG ADJUSTABLE HANDLE BARFOR BIGYCLES April 29, 1930.

, MOTOR BICYCLES, AND THE LIKE VEHICLES Filed Au'g.

Patented Apr. V V

CHARLES EMANnnL' BnoB'Ene, or oorENHAerN, DENMAR I PATENT We V ADJUSTABLE HANDLEBAB. FOR BICYCLES, Moron IcvoLEs; AND. THE LIKE vnHreLEs Application med Augiist 7,1928, Serial'No.

' The present invention relates to improvements in adjustable handle bars for bicycles, motor bicyclesand the like vehicles. I

It is a well knownfact that the putting up of a bicycle in a cycle shed, where there are already a number of cycles, affords a great deal of difiiculties, particularly owing to the fact thatthe handle bars of-the various cycles catch into each other on accountof the larger space they take in relation to the breadth of the cycle itself. To overcome these difficulties there have been constructed handle bars to fold down, thereby economizing the space I taken up by the cycle. The presentinvention relates to, an improvement in such adjustable or folding handle bars and is mainly.

, characterized by the laterally extendingarms of the handle bar being arranged :to lock in p 7 their open (operative) position as well as their closed (folded down) position bymeans of a single locking device that is'operative, whether the handle bar is op n or closed down. prise a lock bolt which in either position of the handle bar engages a lock plate or the like attached to the-handle bar, and which device may be released bymeans of a suitablekey] This combination of handle bar and lock device serves simultaneously as lock against unauthorized removal of the cycle, because the handle bar when folded down renders it impossible to ridethe cycle.

One manner of constructlng. the-invention is illustrated inthe accompanyingdraw1ng',;

where i Fig. l'is afront 7 according to the invention in open operative position, I i Fig. 2 a plan elevation of sameshowing the one (the right hand), arnrin operative post.

the'cycle by means of thestem '1, and is held here by means of a clamp bolt2. The stem 1 has on its upper end an extension 1 ending" This device mayfor instance comdeath of the handle bar? V erative position.

the handlebar eem ia'ana in Denmark January 19, i928.

atthetop in across piece 3 providedat each I end'with two lugs 4;, 5, through which is screwed a bolt 6, provided on its forward extending end with a comparatively high head 7. Between the lugs 4, 5 on either end of the, crosspiece 3 the two laterally extending arms 8, 9 of the handle bar are arranged rotatably V on the bolts 7 each arm having a butt 10 fitting in between the lugs 4, 5. The butts 10 a'rerou-nded on'their lower part, whereas the upper parts are squared and abut the cross piece 3 when the handle bars are in their open operative position.. The heads 7 of the bolts 6 are each providedfwith' a threadedhole through which aspindle 12, Figs. 1 and '2, is

screwed: This spindle'12 serves as hinge for- I the lock plate 13, havinglattop anlug 14. en gaging the spindle 12. i The lock plate 13 has; furthermore on each side a bracket 15' with hollowv in which the laterally extending arms erative position. The brackets 15 are ar-'- ranged'in suchamanner that in connection with thelock-plate 13 they forma U-shaped yoke engaging the arms of thehandle bar when foldedIdown, see Fig. 2.- The inner side of'the lock plate 13 carries a lock 16which,

when the lock plateiis' pressed up againstthe extension 1? on the stem-'l'of thehandle-bar,

locks thistothe' stem by means of a lock bolt in the lock engaging an eye 17 attached to the extension 1 It is thusevident that the lock plate with lock firmly holds the arms of the handle bar in either of their extreme p0 siti-ons, that is either when opened in operative' position, or when folded down in inop- The lock bolt of the lock v16 is turned out of engagement with the eye 17 by means of a key, which is inserted into 7' the key hole 18 and turned, while the lock plate 13 is, simultaneously turned upon the spindle 12.

In order to render impossible theiremoval there is arranged in accordance with the invention aplate 19, Figs. 4c and 5, around the I heads 20 of the bolt." This plate is of the same height as the bolt head 20 and fits tightly around it, and is furthermoreprovided 79 7 8, 9 rest when the handle bar arms are in opwith an extension 21 inserted Within a cutting in the the extension 1 of the stem 1, thereby preventing the application of a key to the 7 head of bolt 20. To maintain a firm hold of 7 ing these arms rotatably :to, the handlebar .stem, a lock plate With tWo brackets engagthe plate 19 to the handle bar the extension 1 is provided With screws 22 that enter corresponding screw holes in the extension 21. The heads of theseiscrews 22are lowered level With the surface of the extension 1, and are covered by the lock plate When locked to the handle bar, and therefore cannot be removed from the plate 19 21. Thus the plate 19, 21

is prevented from beingremoved to allow the loosening oi theclamping bolt and consequently the removal of the handle bar.

The lock device described in the above may be varied in many Ways within the scope of the invention.

' '1. Inhandle bars for motor cycles, cycles and the like vehicles, the combination of two laterally extending arms, means for attaching the arms-of the handlebar in either: their open operative position or in their folded d'oWn inoperative position, means for looking said lock plate With the handle bar'arms in either of 'theextreme positions, to. the eflect that When the arms are locked in their folded down position unauthorized removal of the vehicle is prevented.

2. In handle bars for motor cycles, cycles and the like vehicles, the combination of latera-11y extending arms, :a lock plate rotata'bly' attached to the handlebar stem, a clamp bolt holding said stem to the frame of the vehicle, aro-und the head of said bolt a tightly fitting plate With an extension lowered into a cutting'in the handle bar, .and attached here byline-ans of screws arranged in such a manner that their heads are covered by the lock plate. e

In testimony whereof I affix my signature.

' CHARLES EMANUEL BROBERG, 

